In this letter, an attempt for rapid detection of biomarkers for SARs-CoV-2 virus is initiated for the first time, employing MoS ₂₌ based dual-gate mosfet with embedded nanogap in the gate dielectric. Based on the spike, envelope, and DNA proteins of the virus, a deep analysis of the device performance in terms of transfer characteristics I _on /I _off ratio is performed using SILVACO ATLAS TCAD by considering the dielectric constant equivalent of the virus proteins as κ = 4,10,12 and with variation of DNA charge densities as −2 × 10 ¹² Ccm ⁻² to +2 × 10 ¹² Ccm ⁻² . The threshold voltage (V _th ) is eventually extracted and is used as the detection metric to evaluate the sensing ability of the device exhibiting superior V _th sensitivity as high as 100 mV as compared to some of the existing models. Results also reveal a high dependency of the sensitivity on the bioelement configuration within the nanogap and the channel material.